The idea I have always liked, though have never done the numbers on, is a giant “heat pipe” that would circle the moon. You could put it on any latitude you wan

The idea I have always liked, though have never done the numbers on, is a giant “heat pipe” that would circle the moon. You could put it on any latitude you want, but you effectively take advantage of the temperature gradient to continuously flow a gas/liquid around the moon. That in turn turns turbines attached wherever you need the power.